The path to studying data science as a non-major was difficult. I said I was self-studying, but there were many days when I was anxious because there was too much information and knowledge organized in a disorganized manner. However, with the 70 basic Python questions, I felt like my knowledge was organized and I could do it. In the crawling part, it wasn't easy based on the confidence I had gained before, but as you said, I understood about 50% and practiced until I could do it on my own. I'm going to polish it and bring it up to 100%. I'm grateful that I was able to listen to such a great lecture. Ps. I have a question. When specifying the data range in the developer tool during crawling, I think I get a lot of None type errors because I'm not good at viewing the HTML code. How can I practice this part?